Adarim climbs first down the rope. After a long climb, he reaches the bottom, where he feels a rough stone floor. Only a few feet of rope are lying here, so the shaft must be 40-50 feet deep. It is pitch black. You are likely to not notice any gruesome monsters down here.

Remus: Harry... I'm a werewolf.
Harry: Are you fucking serious?
Remus: Well yes, but I don't see how that applies here.

Gerald and Saucix climb down the rope and make their way through the crack. Gerald's armor is scratched; fortunately he doesn't get stuck. The crack quickly widens and leads to what looks like a large natural cavern, which continues further away in the darkness beyond the reach of Gerald's torch.

Suddenly a clattering sound echoes through the cave. Gerald and Saucix look around for its source, and see this crawling across the cavern floor.

Two options face you. Get everyone down here and push further into this cave, to see sights that no adventurer has seen before. Or retreat like the wise and the cowardeous would. Or take a third option and split the party.

Remus: Harry... I'm a werewolf.
Harry: Are you fucking serious?
Remus: Well yes, but I don't see how that applies here.